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a 24 v battery of internal …

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a 24 v battery of internal resistance 4 ohm Is connected to a variable resistor .at what value of current drawn from the battery is the rate of heat produced in the resistor is maximum ?

Posted by Shubkarman Badesha 6 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Tushar Goyal 6 years, 10 months ago

Heat produced is max. when internal resistance,r is equal to external resistance . Let external resistance is R Then the total current in circuit is 24= i (4+R) Now , r =R=4 So, i =3A

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